[PATCH 01/46] mtdpart: Propagate _get/put_device()

From: Daniel Walter
Date: Wed Aug 31 2016 - 03:39:37 EST


From: Richard Weinberger <richard@xxxxxx>

If the master device has callbacks for _get/put_device()
and this MTD has slaves a get_mtd_device() call on paritions
will never issue the registered callbacks.
Fix this by propagating _get/put_device() down.

Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
---
drivers/mtd/mtdpart.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 1f13e32..ec852fa 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -317,6 +317,18 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
return res;
}

+static int part_get_device(struct mtd_info *mtd)
+{
+ struct mtd_part *part = mtd_to_part(mtd);
+ return part->master->_get_device(part->master);
+}
+
+static void part_put_device(struct mtd_info *mtd)
+{
+ struct mtd_part *part = mtd_to_part(mtd);
+ part->master->_put_device(part->master);
+}
+
static int part_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *oobregion)
{
@@ -463,6 +475,12 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
slave->mtd._block_isbad = part_block_isbad;
if (master->_block_markbad)
slave->mtd._block_markbad = part_block_markbad;
+
+ if (master->_get_device)
+ slave->mtd._get_device = part_get_device;
+ if (master->_put_device)
+ slave->mtd._put_device = part_put_device;
+
slave->mtd._erase = part_erase;
slave->master = master;
slave->offset = part->offset;
--
2.8.3